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#pragma once
#include <mutex>
#include <string>
namespace lsp
{
class stream
{
public:
virtual ~stream() = default;
virtual bool fail() = 0;
virtual bool bad() = 0;
virtual bool eof() = 0;
virtual bool good() = 0;
virtual void clear() = 0;
virtual std::string what() = 0;
virtual bool need_to_clear_the_state()
{
return false;
}
bool operator!()
{
return bad();
}
};
class istream : public stream
{
public:
virtual int get() = 0;
virtual ~istream() = default;
virtual istream& read(char* str, std::streamsize count) = 0;
};
template<class T>
class base_istream : public istream
{
public:
explicit base_istream(T& _t) : _impl(_t)
{
}
int get() override
{
return _impl.get();
}
bool fail() override
{
return _impl.fail();
}
bool bad() override
{
return _impl.bad();
}
bool eof() override
{
return _impl.eof();
}
bool good() override
{
return _impl.good();
}
istream& read(char* str, std::streamsize count) override
{
_impl.read(str, count);
return *this;
}
void clear() override
{
_impl.clear();
}
T& _impl;
};
class ostream : public stream
{
public:
virtual ~ostream() = default;
virtual ostream& write(std::string const&) = 0;
virtual ostream& write(std::streamsize) = 0;
virtual ostream& flush() = 0;
};
template<class T>
class base_ostream : public ostream
{
public:
explicit base_ostream(T& _t) : _impl(_t)
{
}
bool fail() override
{
return _impl.fail();
}
bool good() override
{
return _impl.good();
}
bool bad() override
{
return _impl.bad();
}
bool eof() override
{
return _impl.eof();
}
ostream& write(std::string const& c) override
{
_impl << c;
return *this;
}
ostream& write(std::streamsize _s) override
{
_impl << std::to_string(_s);
return *this;
}
ostream& flush() override
{
_impl.flush();
return *this;
}
void clear() override
{
_impl.clear();
}
protected:
T& _impl;
};
template<class T>
class base_iostream : public istream, public ostream
{
public:
explicit base_iostream(T& _t) : _impl(_t)
{
}
int get() override
{
return _impl.get();
}
bool fail() override
{
return _impl.fail();
}
bool bad() override
{
return _impl.bad();
}
bool eof() override
{
return _impl.eof();
}
bool good() override
{
return _impl.good();
}
istream& read(char* str, std::streamsize count) override
{
_impl.read(str, count);
return *this;
}
ostream& write(std::string const& c) override
{
_impl << c;
return *this;
}
ostream& write(std::streamsize _s) override
{
_impl << std::to_string(_s);
return *this;
}
ostream& flush() override
{
_impl.flush();
return *this;
}
void clear() override
{
_impl.clear();
}
protected:
T& _impl;
};
} // namespace lsp
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